Fungalpedia – Note 705, Chaetothyriaceae
Chaetothyriaceae Hansf. ex M.E. Barr.
Citation when using this data: D. S. Marasinghe et al. 2023 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Chaetothyriales, Chaetothyriomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi
Epiphytic or saprobic on leaves and branches or stems. Sexual morph: Ascomata superficial, immersed to erumpent through cracking or splitting of the host tissue, solitary to gregarious, with periphysate ostioles, with or without papilla. Peridium composed of several layers, outer layers of dark brown cells, inner layers of hyaline to light brown flattened cells. Hamathecium lacking or comprising filiform, hyaline, septate paraphyses. Asci 4–8-spored bitunicate, oblong, clavate to nearly cylindrical, oval, sessile or short pedicellate, with or without an ocular chamber, forming in a basal layer, often interspersed with and covered by cellular remnants of interthecial tissues. Ascospores overlapping 1-multi-seriate, irregularly arranged, ellipsoid to broadly obovoid, fusiform to cylindrical, cylindrical to oblong, hya- line or lightly pigmented, yellowish to brownish, aseptate or 1–2-trans-septate, or muriform or olivaceous-green at the septa, thin-walled, with or without a gelatinous sheath or appendages, guttulate or eguttulate. Asexual morph: Coelomycetous and hyphomycetous (Tian et al. 2021).
Notes: Chaetothyriaceae was established by Hansford (1946) with Chaetothyrium as the type genus (type species: C. guaraniticum). Species of this family are typically capnodiaceous due to their typical sooty mold habit (Batista and Ciferri 1962). Eriksson (1982) accommodated this family in Dothideales and later Barr (1987b) placed Chaetothyriales with eight families. Species of Chaetothyriaceae are primarily tropical species and have ascomata with mycelial pellicle with dark mycelium forming as a loose net of hyphae over the substrate (Batista and Ciferri 1962; Hughes 1976; Pereira et al. 2009). According to the phylogenetic analysis, Chaetothyriaceae clustered with Cyphellophoraceae as a sister clade with 99% ML BS and 0.90 BY PP support Recommended genes for studying this family are LSU, ITS and SSU.
Type genus Chaetothyrium Speg., Anal. Soc. cient. argent. 26(1): 46 (1888)
Figure 1 – Phylogenetic tree generated from maximum likelihood analy- sis based on LSU and ITS sequence data for 273 strains representing epifoliar fungal species in Dothideomycetes, Eurotiomycetes, Lecano- romycetes and Sordariomycetes. Armillaria mellea (GLM 45831) was used as the outgroup taxon. The tree topology of the maximum-like- lihood analysis is similar to the Bayesian analysis. Bootstrap support values for maximum likelihood (ML) equal to or greater than 90% are given above or below the nodes. Branches with Bayesian poste- rior probabilities (BPP) equal to or higher than 0.90 are given above or below the nodes. The hyphen (“–”) indicates a value lower than 90% for ML BS or 0.90 for BY PP. Ex-type, holotype and ex-epitype strains are in bold. Epifoliar taxa of each clades are in red
Figure 1 – Continued
Figure 1 – Continued
Figure 1 – Continued
References
Barr ME 1987b – Prodromus to class Loculoascomycetes. University of Massachusetts, Amherst.
Batista AC, Ciferri R 1962 – The Chaetothyriales. Sydowia Beihefte 3:1–129.
Eriksson OE 1982 – Revision of outline of the Ascomycetes. Syst Ascom 1:1–16.
Hughes SJ 1976 – Sooty moulds. Mycologia 68:693–820.
Entry by
Diana Sandamali Marasinghe, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai, 50150, Thailand
Published online 29 August 2023